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Simplifying 85 + -4x = 2x + 7 Reorder the terms: 85 + -4x = 7 + 2x Solving 85 + -4x = 7 + 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. 85 + -4x + -2x = 7 + 2x + -2x Combine like terms: -4x + -2x = -6x 85 + -6x = 7 + 2x + -2x Combine like terms: 2x + -2x = 0 85 + -6x = 7 + 0 85 + -6x = 7 Add '-85' to each side of the equation. 85 + -85 + -6x = 7 + -85 Combine like terms: 85 + -85 = 0 0 + -6x = 7 + -85 -6x = 7 + -85 Combine like terms: 7 + -85 = -78 -6x = -78 Divide each side by '-6'. x = 13 Simplifying x = 13
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